<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"http://agent.vietnamair.com.vn/Login.aspx");
curl_setopt($ch, CURLOPT_COOKIEJAR, "abc");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "txtUser=test&txtPassWord=123456");
curl_exec ($ch);
curl_close ($ch);
?>